Answer: Subnetting is the process of dividing the large network into the smaller segments, which helps in efficient resource allocation and also in simplifying network management tasks such as security enforcement and scalability of the network.

Subnetting helps in Network Management in below ways:

Resource Allocation

As the subnetting allows us to divide the larger network into smaller network. This enables us the proper resource allocation of IP addresses.

Improved Network Performance

By dividing the network into smaller subnets, subnetting helps to reduce the broadcast traffic and also improve the network performance. Devices within the same subnet can communicate more efficiently.

Security Improvement

Subnetting also allows the implementation of access control policies and security measures at the subnet level by isolating these security resources or user groups into separate subnets. The network administrators can strictly monitor the subnet and mitigate the risk.

Easier Network Management

Subnetting makes the smaller subnets more straight forward than handling a single large network. The network administrators can apply specific configurations, monitoring and troubleshooting procedures to each subnet independently.

Scalability

The submitting also has the support to the network scalability by providing a proper structured framework of adding new nodes, or the devices, or expanding the exiting network segments.